* When to use shall/ will/ be going to?
1. an offer(shall) -> Shall we/ I help you take out the rubbish?
2. future facts ( will) ->This year, dragon boat festival will be on June.10th.
3. a quick decision (will) -> Tell me where he lives. I will go find him right away.
4. a clue/ an evidence( be going to) -> There are lots of dark clouds outside. It seems It is going to rain pretty soon.
5. prediction -> no clue(will) -> He will quit his job.
prediction -> clues (be going to )-> He passed all exams. He is going to get a scholarship.
6. plans (be going to) -> I am going to clean my home this afternoon.